A DEVICE FOR CRUSHING STRUCTURES

摘要

A device for crushing structures, which consists of crushing pincers (1), in which there are two arms (2) with jaws (3) joined to an intermediate member (6) and a hydraulic cylinder (5) operating the arms (2) to press the jaws (3) together, a jointed jib (10) to move the crushing pincers (1) to the place of work, which jib (10) includes a support leg (11) jointed around the vertical axis of the base (12) and at least two sequentially jointed jib sections (15, 16) jointed to this, at the end of which is the pincer (1) positioning mechanism (8) connected to the intermediate member (6), and which device includes a hydraulic operating system for the operating devices of the pincers (1), positioning mechanism (8), and jib (10). By means of the invention an attempt is made to create a light, efficient, and simple pincer crushing device, which can also be used in restricted spaces indoors. In accordance with the invention the positioning device (8) of the pincers (1) include two sequentially jointed or connected turning devices (13, 14) to turn the crushing pincers (1) around two spatial axes, and the arms (2) include teeth (4) arranged to fit each other or other synchronization devices, which keep the angles of the arms equal in relation to the intermediate member (6), and the operating system permits the jaws (2) of the pincers (1) to take up a position essentially freely from an angled position to one directly against the compression.